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Dowlink disturbant-code dynamic distribution of wireless telecommunication network

A wireless communication network, dynamic allocation technology, applied in wireless communication, network planning, radio/induction link selection arrangement, etc. The effect of reliable network architecture

Inactive Publication Date: 2009-02-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the current static allocation mechanism of scrambling codes cannot realize the allocation of downlink scrambling codes when a large number of (pico) cells or mobile cells randomly access the network, and the scrambling codes of each cell can only be determined at the beginning of configuration.

Method used

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  • Dowlink disturbant-code dynamic distribution of wireless telecommunication network
  • Dowlink disturbant-code dynamic distribution of wireless telecommunication network
  • Dowlink disturbant-code dynamic distribution of wireless telecommunication network

Examples

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Embodiment Construction

[0022] Such as image 3 Shown is a flowchart of a method for dynamic allocation of downlink scrambling codes in a wireless communication network according to the present invention. First, set the scrambling code set (step 101); then, traverse the neighboring cells of the cell to which the scrambling code is to be allocated, and exclude the scrambling codes already occupied by neighboring cells from the scrambling code set (step 102); finally, remove the corresponding After the adjacent cell scrambling code, the scrambling code is selected in the scrambling code set that is free and available to allocate the scrambling code to the cell to which the scrambling code is to be allocated (step 103).

[0023] Here, the traversing the neighboring cells of the cell to which the scrambling code is to be allocated, and finding the scrambling codes occupied by these neighboring cells may adopt a general downlink basic scrambling code acquisition method in a wideband code division multiple acc...

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Abstract

The method comprises: in the first, setting a scramble code set; traversing all the adjacent cells of the cells the the scramble codes are allocated for; removing the scramble code already occupied by the neighboring cells from the scramble code; allocating scramble code for the cell required to get the scramble code by using those scramble codes not being allocated.

Description

Technical field [0001] The invention relates to a downlink scrambling code allocation mechanism in a third-generation wireless communication network, and specifically, to a dynamic allocation method of downlink scrambling codes in a WCDMA (Wideband Code Division Multiple Access) network. Background technique [0002] In the WCDMA network, in addition to the spread spectrum operation, the transmitting end performs a scrambling (code) process at the same time, such as figure 1 Shown. The purpose is to distinguish different terminals or base stations (depending on uplink transmission or downlink transmission). The scrambling is performed on spread spectrum, so it does not change the signal bandwidth, but it can effectively distinguish signals from different sources. Through scrambling, even if the same spreading code is used for spreading different transmitters, it will not affect the normal detection of the signal. [0003] Specifically, in the uplink, the scrambling code plays a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/36H04W16/10
Inventor 侯志华王之曦
Owner ZTE CORP
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